alkene


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alkene

(ăl`kēn), any of a group of aliphatic hydrocarbons whose molecules contain one or more carbon-carbon double bonds (see chemical bondchemical bond,
mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the formation of an aggregate with sufficient stability to be regarded as an
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). Alkenes with only one double bond have the general formula CnH2n. In the International Union of Pure and Applied Chemistry (IUPAC) system of chemical nomenclature, the name of an alkene is derived from the name of the corresponding alkanealkane
, any of a group of aliphatic hydrocarbons whose molecules contain only single bonds (see chemical bond). Alkanes have the general chemical formula CnH2n+2.
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 by replacing the -ane alkane suffix with -ene and, if necessary, adding a prefix to indicate the location of the double bond in the molecule. The IUPAC name of the simplest alkene, H2C=CH2, is ethene, which is derived from ethane. Propene is related to propane. Two alkenes, 1-butene and 2-butene, are related to butane; these two compounds, which differ in the location of the double bond in their molecules, are structural isomersisomer
, in chemistry, one of two or more compounds having the same molecular formula but different structures (arrangements of atoms in the molecule). Isomerism is the occurrence of such compounds. Isomerism was first recognized by J. J. Berzelius in 1827.
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. In addition to these IUPAC names, many of the alkenes have common names, e.g., ethene is called ethylene and propene propylene. The alkenes as a group are sometimes called the ethylene series. Since the carbon-carbon double bond is sometimes called an olefinic linkage, the alkenes are sometimes called the olefins. Many of the reactions in which alkenes take part involve the cleavage of half the carbon-carbon double bond and subsequent formation of two single bonds, one to each of the adjacent carbon atoms. Such reactions include hydrogenation, with the formation of an alkane, and hydration, with the formation of an alcohol.

alkene

[′al‚kēn]
(organic chemistry)
One of a class of unsaturated aliphatic hydrocarbons containing one or more carbon-to-carbon double bonds.

alkene

a. any unsaturated aliphatic hydrocarbon with the general formula CnH2n
b. (as modifier): alkene series
References in periodicals archive ?
Alkanes reached the highest value at 80[degrees]C, but alkenes and aldehydes and ketones reached their highest values at 60[degrees]C and 23[degrees]C, respectively.
The products were characterized by 1H-NMR, 13C-NMR, FT-IR, and Mass Spectrometry (MS) that strongly approved the (Z)-double bond configuration of produced alkenes.
All of the available data and observations are consistent with our notions and belief that the reaction involves Al-promoted carbozirconation of alkenes in accord with widely accepted mechanistic insights in the area of the Ziegler-Natta alkene polymerization.
As we transition our long-term business model to commercializing breakthrough chemical platforms, including brand new technology based on 1,1-disubstituted alkene monomers, we wanted the company's name and brand to reflect our evolution," said Jeff Uhrig, CEO of Sirrus.
1] of OC) was also enriched in pyrogenic SOM with a high contribution of BN markers, and in an aliphatic component with particularly high contributions of branched alkenes from an aliphatic SOM fraction, possibly in part pyrogenic.
the carbonyl group) is linked to an alkene carbon (Figure 1).
In the GC/MS analysis result showed produced fuel hydrocarbon compound most of the aliphatic compound such as alkane, alkene or alkyl group compounds.
In scientists' view, a group of chemicals called type-2 alkenes, which are widespread in both the environment and the brains of Alzheimer's patients, act as major drivers of the disease.
Maleic acid (cis-2-butene-l, 4-dioic acid, Lide, 2004) and its corresponding methyl ester, dimethyl maleate (DMME) in which the alkene double bond is in conjugation with a carboxyl group, undergo isomerization on treatment with catalytic amounts of aqueous bromine or [[Br.
Ho] are the Lagrange multipliers for carbon and hydrogen in the paraffin, alkene and alcohol series, respectively.